Vulcanizing apparatus



D. E. HENNESSY VULCANIZING APPARATUS Filed Aug. 19,

192] 2 Sheets-Sheet. l

DANIEL E.HENNE5E1Y NTEIF? I WM ATTU'RNEY Patented Dec. 2, 1924.

UNITED STATES PATENT OFFICE.

DANIEL EDWARD HENNESSY, OE MILWVAUKEE. VII-SCONSIN, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE FISK RUBBER COMPANY, 033 CHICOIEE FALLS, MASSACHU- SETTS, A CORPORATION OF MASSACHUSETTS.

VULCANIZING APPARATUS.

Application filed August 19, 1921/ To all whom it may concern Be it known that I, DANIEL Enwnnn HEN- NESSY, a citizen of the United States, and a resident of Milwaukee, in the countyof Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Vulcanizing Apparatus, of which the following is a specification.

My invention relates to vulcanization apparatus and the principal object thereof is to provide new and improved apparatus of this character. In the drawings accompanying this specification and forming a part thereof I have shown, for purposes of illus tration, one form which my invention may assume. In these drawings:

Figure 1 is a vertical sectional view of this illustrative apparatus.

Figure 2 is an enlarged plan view of the mold of Figure 1, while Figure 3 is an enlarged sectional view of this mold.

The apparatus disclosed herein is particularly adapted to control the application of heat to articles at vulcanization thereof and comprises a heater 11 containing a plurality of molds such as the molds 12 and itself comprising a shell 13 provided at its upper end with a top ring 14 and supported by a heater base not shown. The top ring 14 is adapted to receive a cover 15 while the base carries a ram cylinder 18 enclosing a ram 19 which is provided with a ram table 20. I

The heater cover 15 is constructed to interrupt communication between the space 38 within the inner periphery of the molds 12 and the space 39 outside the molds and at the same time to afford free communication between the inner space 38 and the exterior of the heater and in the embodiment herein illustrated the communication between the spaces 38 and 39 is interrupted by an annular plate 16 carried by the lower face of the heater cover 15, unitary therewith, and of such size as to overlie the molds 12, while communication between the inner space 38 and the exterior of the heater is afforded by the large central opening 21 in the heater cover 15. The ram table is also constructed to segregate the spaces 38 and 39 and this segregation is accomplished herein by a plate 28 secured to the table 20, unitary therewith, and of such size Serial No. 493,590.

as to overlie the molds 12. The segregation of the chambers is completed by so constructing the molds 12, heater cover 15, and ram table 20, that a tight joint is provided between each mold and the adjacent body and in the drawings the upper face 31 of each mold 12 and of the plate 28 is shown as provided with a dovetail annular recess carrying a packing ring 32 having a dovetail portion 33 adapted to seat in the recess 30 and a protruding portion 34 adapted to engage the adjacent surface. Each upper face is also provided with a second ring 35 similar to the ring 32 but segmental and inserted only to balance the strains imposed upon the parts by the ram action.

From the above description it will be understood that the chamber 38 is segregated from the chamber 39 but is freely open to the exterior.

Under certain conditions I may desire to retard the speed at which the ram advances and I have shown herein one arrangement by which such retardation may conveniently be accomplished. This arrangement comprises a duct 40 leading from the ram cylinder 18 to the center part of a threeway valve 41 which on one side exhausts at 42 and on the other side is connected by a duct 43 to a source of fluid pressure 44. Interposed in the duct 43 is a unit 45 having a restricted opening and shunted by the bypass 46.

It will be understood that with the bypass 46 closed fluid entering the cylinder 18 must pass through the restriction in the unit 45 and therefore is retarded to thus retard the upward movement of the ram. The discharge is rapid and a rapid advance may be secured by opening the by-pass 46..

The description herein covers but one embodiment of my invention and is illustrative only and my invention is not limited thereto.

I claim:

1. In combination, a heater, an annu ar article therein, and means adapted to form a fluid tight separation between the space within the inner periphery of said article and the space between said article and said heater without materially restricting the communication between the inner space and the exterior of the heater.

2. In combination, a heater. an annu ar mold therein, and means adapted to form a fluid tight separation between the space within the inner periphery of said mold and the space between said mold and said heater Without materially restricting the C0211- munication between the inner space and the extenior of the heater.

3. In combination, a heater, a plurality of articles therein arranged to fo a tube, andv means adapted to form. a I l tight separation between the space within said tube and the space between said tube and said heater without materially restricting the communication between the inner space and the exterior of the heater.

4'. In con'ibination, a heater, a plurality of moldstherein arranged to term a tube, and means adapted to term a fluid tight separation between the space within said tube and the space between said tube and saidfheater Without mlaterially restricting the communication between the inner space and the eitterior of the heater.

5 In combination, a heater, an annular mold therein, and means independent of said mold adapted to form a fluid tight separation between the space within the inner periphery of said mold and the space between said mold and said heater without materially, restricting the communication between the inner space and the exterior of the heater. I

6." In" combination, a heater, a plurality of molds therein arranged to form a tube, and nieans'independent of said molds adapted to form: a fluid tight separation between. the

space Within saidtub'e and the space between said tube. and said heater without materially restricting" the communication between the inner space and the exterior oi: the heater.

In combination, a heater, an annular article therein. and a heater cover adapted to fiorm a fluid tight separation at one face of said article between the space withiri'the inner periphery of said article and the space between said article and the heater without materially restricting the communication'between the inner space and the ext erior of the heater.

'SIIncombination, a heater, an annular mold'therein,and'aheater cover adapted to' formafiuid tight separation at one face of said mold'between the'space within the inner mar periphery of said mold and the space between said mold and said heater without ia'lly restricting the communication between theiiinr space and the exterior of the liatei'l.

9. Iii-'cfoinbiiiation, a'heater a plurality of a rticlfs'the rein'arrangedto form a tube and a heater cover adapted to form a fluid tight separation at one end 10f said tube between the space within said tube and the space between said'tiibe and said heater without inaterially restricting the communication between the inner space and the exterior of the heater.

10. In combination, a heater, a plurality said article between the space within the.

inner periphery of said article and the space between said article and the heater without materially restricting the communication between the inner space and the exterior of the heater, and a ram table adapted to form,

a fluid tight separation betweensaid inner space and said outer space at the other end of said tube.

12. In combination, a heater, anannular mold therein, a heater cover adapted to form:

a fluid tight separation at one face of said mold between the space Within the inner periphery of said mold and the. space between said mold and said heater without materially restricting the communication be-.

tween the inner space and the exterior of the heater, and a ram table adapted to form a fluid tight separation between said inner space and said outer space at the other end of said. tube. V

13. In combination, a heater, a plurality of articles arranged thereinto form. a tube. a heater cover adapted to form a fluid tight separation at one end of said tube between the space within said tube an'dthe space be tween said tube and said heater without materially restricting the comnninication between the inner space and thev exterior of the heater, and a rain table adapted to' form a fluid tight separation betweenv said inner space and said outer space at the other end of said tube.

14. In combination a heater, a. pluralitw of molds therein arranged. to form. a tube, a heater cover adapted to form a fluid tight. separation at one end of saidt-ube between the space .within said tube and theaspaee between said tube and said heater ,3 hfout materially restricting the communicationbe tween the inner space and the GXtGIl OIflOi the heater, and a ram table adapted to form a fluidtight separation between said inner space and said outer space at the other end of said tube.

15. A heater cover adapted to form a fluid tight separation, at the abutting taceotan abutting annular article, between the space within the inner periphery of said article and the space outside the outer periphery of said article without materially restricting the communication between the inner space adapted to form a fluid tight closure over and the exterior of the heater. the opening between the heater shell and 16. A heater cover comprising an annulus a mold within the heater. adapted to form a fluid tight closure over 19. A heater cover comprising an annulus 15 5 the opening between the heater shell and adapted to form a fluid tight closure over an article within the heater. the opening between the heater shell and an 17. A heater cover comprising an annulus annular mold within the heater. adapted to form a fluid tight closure over In testimony whereof I have signed my the opening between the heater shell and name to the above specification. 1. an annulus within the heater.

18. A heater cover comprising an annulus DANIEL EDWARD HENNESSY. 

